Revert "Fixing race condition on mesh (#1448)"

This reverts commit ae0153c.

Author: germa89

src/ansys/mapdl/core/mesh_grpc.py

@@ -139,7 +139,7 @@ def _update_cache(self):
         self._mapdl.nsle("S", mute=True)
 
         # not thread safe
-        self._update_cache_elem()
+        self._update_cache_elem().join()
 
         threads = [
             self._update_cache_element_desc(),
@@ -540,6 +540,7 @@ def _load_nodes(self, chunk_size=DEFAULT_CHUNKSIZE):
         nodes = parse_chunks(chunks, np.double).reshape(-1, 3)
         return nodes
 
+    @threaded
     def _update_cache_elem(self):
         """Update the element and element offset cache"""
         if self._cache_elem is None:
@@ -553,7 +554,7 @@ def _elem(self):
         in offset.  Each element contains 10 items plus the nodes
         belonging to the element.
         """
-        self._update_cache_elem()
+        self._update_cache_elem().join()
         return self._cache_elem
 
     @_elem.setter
@@ -563,7 +564,7 @@ def _elem(self, value):
     @property
     def _elem_off(self):
         """Element offset array"""
-        self._update_cache_elem()
+        self._update_cache_elem().join()
         return self._cache_elem_off
 
     @_elem_off.setter